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Use of spiro-orthosilicates as blocked polyols/reactive diluents in high-solid PUR clear coats for car refinish applications / K. J. van der Berg in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 89, B4 (12/2006)
[article]
Titre : Use of spiro-orthosilicates as blocked polyols/reactive diluents in high-solid PUR clear coats for car refinish applications Type de document : texte imprimé Auteurs : K. J. van der Berg, Auteur ; R. van Oorschot, Auteur ; L. G. J. van der Ven, Auteur Année de publication : 2006 Article en page(s) : p. 285-291 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Automobiles -- Vernis
Diluants
Haut extrait sec
Polyols
Polyuréthanes
Réseaux polymères
Résistance au lavage
Revêtements bi-composant
Revêtements organiques
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).
Spiro-orthosilicatesIndex. décimale : 667.9 Revêtements et enduits Résumé : Spiro-orthosilicates, prepared from tetraethyl orthosilicate and a diol (2-butyl-2-ethyl-1,3-propanediol or 2-ethyl-1,3-hexanediol), are used as latent reactive diluents in two-pack polyurethane coatings. A fast curing and long pot life have been achieved because of the latency in the can. Spiroorthosilicates hydrolyse with moisture into a diol and a polysiloxane. Kinetic data on hydrolysis and curing are given. The formation of polysiloxane has been characterised by solid-state29Si NMR. The film properties obtained are excellent. The spiro-orthosilicates-based films are tested as clear coats for car refinishes. In particular, a very good car wash resistance has been obtained, which is combined with other properties, also at a good, competitive level. Note de contenu : - Synthesis and stability of spiro-orthosilicates
- Paint formulation and curing
- Paint properties of aSOS-based high-solid clear coat
- Table 1 : DMA measurements of SOS-based HS CC compared with moisture cure clear coat and a state-of-the-art clear coatDOI : 10.1007/BF02765580 En ligne : https://link.springer.com/content/pdf/10.1007/BF02765580.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5269
in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 89, B4 (12/2006) . - p. 285-291[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006010 - Périodique Bibliothèque principale Documentaires Disponible Versatile and valuable / Misty Huang in ADHESIVES AGE, Vol. 45, N° 4 (04/2002)
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Titre : Versatile and valuable : The advantages of using isocyanatosilanes in adhesive and sealant applications Type de document : texte imprimé Auteurs : Misty Huang, Auteur ; Patrice Lehmann, Auteur ; Bruce Waldman, Auteur ; Fred Osterholtz, Auteur Année de publication : 2002 Article en page(s) : p. 33-37 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Colles:Adhésifs
Composés aliphatiques
Isocyanates
Joints d'étanchéité
Liants
Mastics
Polyols
Polyuréthanes
Résistance au rayonnement ultraviolet
Résistance aux conditions climatiques
Résistance chimique
SilanesIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : The advantages of silane-modified polymeric binders have been recognized in coatings, adhesives and sealants markets. The increased accessibility of isocyanate silanes to the market will allow this technology to grow further, due to processing simplicity and applicability to a wide range of polymers.
The use of isocyanate silanes and polyols to make precursors for elastomeric sealants generally provides silylated polymers with lower viscosity than that obtained by other methods. easier formulation and mixing is one benefit.
As with conventional polyurethanes, the properties of these SPUR polymers can be tailor-made to range from low modulus to high modulus to meet the demands of different markets. These silane-terminated prepolymers may be used for formulating on-part room temperature moisture-cure sealants or adhesives with identified benefits such as superior adhesion performance, UV stability/weatherability and chemical resistance. Moreover, the characteristic of relatively fast cure makes the isocyanate silane-capped SPUR technology worth examining for insulated glass and automotive windshield sealant applications.
The aliphatic isocyanate groups of Silquest A-Link 35 and Silquest A-Link 25 silanes allow them to be used in the modification of a wide range of polymers that contain functional groups of OH, SH and NH2. The modification process can be carried out in different types of apparatus. The silane-modified polymers provide the enhanced mechanical properties, excellent adhesion and improved high-fail temperature in shear that can especially beneficial to hot melt adhesives.Note de contenu : - Preparation of sealants based on SPUR prepolymers
- Property and performance testing
- A simple process for making silane-modified polymersPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20001
in ADHESIVES AGE > Vol. 45, N° 4 (04/2002) . - p. 33-37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001470 - Périodique Bibliothèque principale Documentaires Disponible A versatile, high-performance polyol chemistry for broad industrial market use / Jamie Dzickowski in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4647 (12/2018)
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Titre : A versatile, high-performance polyol chemistry for broad industrial market use Type de document : texte imprimé Auteurs : Jamie Dzickowski, Auteur ; Sandra Case, Auteur ; Gianluigi Cassin, Auteur ; Jeremy Lizotte, Auteur ; Geoff Webster, Auteur Année de publication : 2018 Article en page(s) : p. 15-18 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Can coating
Formulation (Génie chimique)
Liants
Polyesters
Polyols
Polyuréthanes
Revêtements -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : Polyester polyol chemistry has been used extensively as a binder option in high performance industrial coatings applications for decades. Limitations of traditional polyester technology, such as weathering and chemical resistance have restricted its use to a co¬binder due to the high level of performance requirements associated with these markets. Translating the use of a speciality monomer from copolyesters for thermoplastic applications, chemists at Eastman have evaluated the effectiveness of a unique glycol molecule as a building block in copolyester coatings resins targeted for use in automotive coatings, metal packaging applications for food cans and industrial applications like the agricultural and construction segment. Proven to enhance the hydrolytic stability and offer a balance of flexibility and hardness, the speciality polyol is enabling distinctive binder properties to address ever-changing global coatings needs. Fulfilling performance targets across very diverse fitness for use criterion, this paper capitalises on the versatility of the speciality polyol platform of resins.Through performance comparisons to next best alternative technologies, the improved durability will highlight the advantage of this next generation of polyol chemistry. Note de contenu : - Metal packaging applications
- Table 10 : Resin series used to evaluate novel polyol performance in metal food packaging applications
- Table 11 : Target CTQ for resin design to address metal packaging market needs
- Table 12 : Basic white polyurethane screening formulation for can coatings applications
- Table 13 : White polyurethane screening formulation physicals and test results
- Table 14 : White hybrid/polyurethane/benzoguanamine screening formulation for can coatings applications
- Table 15 : hite screening formulation physicals and test results of MP-1 for different crosslinker packages
- Fig. 12 : Below L. Fabrication representation by Erichsen cup couplet with 3% acetic acid simulant resistance of white polyurethane coatings
- Fig. 13 : Below R. Fabrication representation by Erichsen cup coupled with 3% acetic acid simulant resistance of white polyurethand and hybrid coating formulations
- Fig. 14 : Cathodic disbonding test system and results of exposed coated pressed can lids of white polyurethane coatings with the MP-1 and the control
- Fig. 15 : Polyester resin space broken-down by functionality, functional groups and molecular weight rangesEn ligne : https://drive.google.com/file/d/1BqW9lA4L1699vqNvQkJoeJM9ccXvYWpG/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31513
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4647 (12/2018) . - p. 15-18[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20463 - Périodique Bibliothèque principale Documentaires Disponible A versatile, high-performance polyol chemistry for broad industrial market use / Jamie Dziczkowski in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4646 (11/2018)
[article]
Titre : A versatile, high-performance polyol chemistry for broad industrial market use Type de document : texte imprimé Auteurs : Jamie Dziczkowski, Auteur ; Sandra Case, Auteur ; Gianluigi Cassin, Auteur ; Jeremy Lizotte, Auteur ; Geoff Webster, Auteur Année de publication : 2018 Article en page(s) : p. 20-25 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Automobiles -- Revêtements
Automobiles -- Revêtements:Automobiles -- Peinture
Automobiles -- Vernis
Composés organiques volatils
Durée de vie en pot
Formulation (Génie chimique)
GlycolsUn glycol ou diol est un composé chimique organique portant deux groupes hydroxyle (-OH).
Lorsque les deux groupes hydroxyle sont portés par le même atome de carbone, on parle de diol géminal. Parmi ceux-ci, on compte par exemple le méthanediol (H2C(OH)2) ou le 1,1,1,3,3,3-hexafluoropropane-2,2-diol ((F3C)2C(OH)2), la forme hydratée de l'hexafluoroacétone.
On parle de diol vicinal lorsque les deux groupes hydroxyle sont en position vicinale, c'est-à -dire attachés à des atomes de carbone adjacents. On compte parmi ceux-ci l'éthane-1,2-diol ou éthylène glycol (HO-(CH2)2-OH), un composant courant des produits antigels ou le propane-1,2-diol (propylène glycol, HO-CH2-CH(OH)-CH3).
Parmi les composés avec des groupes hydroxyles bien plus éloignés on compte le butane-1,4-diol (HO-(CH2)4-OH) ou encore le bisphénol A.
Polyesters
Polyols
Réactions chimiques
Résistance aux conditions climatiques
Résistance chimique
Revêtements (produits chimiques):Peinture (produits chimiques)
Vernis bi-composantIndex. décimale : 667.6 Peintures Résumé : Polyester polyol chemistry has been used extensively as a binder option in high performance industrial coatings applications for decades. Limitations of traditional polyester technology, such as weathering and chemical resistance have restricted its use to a co-binder due to the high level of performance requirements associated with these markets. Translating the use of a speciality monomer from copolyesters for thermoplastic applications, chemist at Eastman have evaluated the effectiveness of a unique glycol molecule as a building block in copolyester coatings resins targeted for use in automotive coatings, metal packaging applications for food cans and industrial applications like the agricultural and construction segment. Proven to enhance the hydrolytic stability and offer a balance of flexibility and hardness, the speciality polyol is enabling distinctive binder properties to address ever-changing global coatings needs. Fulfilling performance targets across very diverse fitness for use criterion, this paper capitalises on the versatility of the speciality polyol platform of resins. Through performance comparisons to next best alternative technologies, the improved durability will highlight the advantage of this next generation of polyol chemistry. Note de contenu : - Existing polyol technology
- Speciality polyol design
- Automotive and industrial applications
- Table 1 : Common polyol chemistries used in liquid OEM coatings applications
- Table 2 : Newman's empirical steric factors and material characteristics of common glycols
- Table 3 : End use application and coating details for evaluating speciality polyester polyol performance
- Table 4 : Target CTQ to address automotive monocoat and industrial topcoat market needs
- Table 5 : Resin series used to evaluate novel polyol performance in two-component top application
- Table 6 : White two-component formulations to evaluate performance in topcoat applications
- Table 7 : Chemical resistance of various white topcoat chemistries
- Table 8 : Cure response and pot-life for different industrial applications adjusted by catalyst selection
- Table 9 : VOC ranges for two-component topcoats formulated with the speciality polyol IC-1
- Fig. 1 : Representative reaction of a polyol with melamine resin chemistry
- Fig. 2 : Mechanism of thermosetting polyol/isocyanate reaction to form urethane linkage
- Fig. 3 : Reaction of phenolic resin with polyol to create C-C linkage within the themoset
- Fig. 4 : Chemical structure of 2,2,4,4-tetramethyl-1,3-cyclobutane diol (TMCD)
- Fig. 5 : Newman's empirical steric factors and material characteristics of common glycols
- Fig. 6 : Experimental half-life of model diesters after catalysed exposure to accelerated conditions
- Fig. 7 : Improved chemical resistance trend with increasing levels of TMCD monomer in total diol in a two-component topcoat coating system
- Fig. 8 : Common liquid OEM automotive and industrial paint layers and paint layer functions
- Fig. 9 : Weathering resistance, QUV-A exposure of white topcoat systems at 2500hr
- Fig. 10 : Salt spray resistance (840 hr) as measured by ASTM B117. The paint on right side of scribe (X) was removed to highlight undercut corrosion. The topcoat was applied directly to the metal (SP10 shot blasted steel)
- Fig. 11 : Improved resistance of TMCD poyol-based coatings to Skydrol and brake fluidEn ligne : https://drive.google.com/file/d/1vrYwpBiYJlEyNcFzbeadoe2gcWgovDet/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31575
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 208, N° 4646 (11/2018) . - p. 20-25[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20368 - Périodique Bibliothèque principale Documentaires Disponible Waterborne 2K polyurethane topcoats / Cédric Le Fevere de Ten Hove in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 203, N° 4584 (05/2013)
[article]
Titre : Waterborne 2K polyurethane topcoats Type de document : texte imprimé Auteurs : Cédric Le Fevere de Ten Hove, Auteur ; Christophe Steinbrecher, Auteur ; Denis Heymans, Auteur Année de publication : 2013 Article en page(s) : p. 30-33 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Automobiles -- Revêtements:Automobiles -- Peinture
Diluants
Esters de glycidyle
Polyacryliques
Polyols
Polyuréthanes
Revêtements
Revêtements -- Finition
Revêtements bi-composant
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Conventional acrylic polyols for waterborne polyurethane topcoats are usually prepared via a solution polymerisation process, which is then followed by solvent removal. Thereafter, the resins are dispersed in water. This lengthy process requires high energy levels to distil the solvent and favours side reactions that negatively affect performance of the derived coatings.
This work demonstrates that high quality acrylic resins can be prepared in a very convenient, simple, one step process using glycidyl esters as reactive diluent. Resins were prepared with a solvent level of about 10% with either glycicyl neodecanoate or a novel glycidyl neoanoate. The latter provides resins with a higher glass transition temperature and, therefore, coatings with a faster hardness development rate. Derived 2K polyurethane clearcoats combine properties, such as excellent appearance, durability and drying speed. Further, glycidyl esters reactive diluents were combined with lower molecular weight polyesters to attempt to eliminate the need for any solvent during acrylics polymerisation.Note de contenu : - THE POPPING OR BLISTERING ISSUE
- ACRYLIC AND HYBRID SECONDARY DISPERSIONS
- GLYCIDYL ESTERS-BASED ACRYLIC POLYOLS
- GLYCIDYL ESTER-BASED STAR POLYESTERS AND DERIVED HYBRIDS : Experimental part : polyols and clearcoats formulations and applications - Experimental part : clearcoats performanceEn ligne : https://drive.google.com/file/d/1mIwZ4gp9hFaXa_zZ1N1NZz7of6v4LlS-/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18549
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 203, N° 4584 (05/2013) . - p. 30-33[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15080 - Périodique Bibliothèque principale Documentaires Disponible Waterborne polyuréthane dispersions / John Argyropoulos in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 200, N° 4547 (04/2010)
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